Flue top



July 31, 1923.

L. H. BOWMAN FLUE TOP Filed Feb. 11. 1922 lPatterned July 3l, 1923.

' 'Y l LJNirru-s TAfrEs LEWIS E'. BOWMAN, OIF FENN, IDAHO.'

i FLUE Tor.;

Appiiatibniea February 11,1922. serial No. 535,860.

To all'wiomy itil/may concer/m.

'Be itknown that I, LEWIS I-I. BOWMAN, citizen of the United States, residing. at, Fenn, in the county of Idaand State of 5 Idaho, have invented certain new and useful Improvements in Flue Tops, of which the following is a specification, reference being had to the accompanying drawings. j

It is the purpose of the present invention to provide a device of the present character,

which is self-adjustable', according to the direction of the wind, capable of causing' a better draft in the flue, and producin a better drawing action in the stove or rurnace below.

Heretofore where the flues are left uncovered, there is considerable back draft, preventing the fire in the stovevor furnacel from drawing and properly burning, and causing the interior of the building to be` come full of smoke and soot. d

The present invention' aims to avoid these disadvantages, by providing a self-adjustable rotary flue top or cap, the cap or top proper of which being connected to a vane and disposed on an angle downwardly and laterally for a substantial distance below the upper end of the flue or chimney or any other smoke outlet pipe, thereby creating a tendency to start the wind in an upwardV direction before it reaches the upper end of the flue, thereby insuring a draft, as well asy a drawing action in the flue, and causing the fire on theinterior to lthoroughly burn, and also insuring the discharge of the smoke and soot. I t is obvious that this self-adjustv ing flue-cap or cover -may be applied tothe dischargef end of a flue of anyrkind, not

only to insure the 'prevention of foreign 'matter entering the ue to a very great degree, but also insuring a draft or drawing action in the furnace, the vane actingrto rotate the top or cover in any direction, soas to cause va deflection of the wind and to create a draft and drawing action near the upper end of the liue. i

Still another purpose is the provision of a flue top or cap including a bracket detachably fitted within the upper end of the flue or chimney, to hold the cap or cover in position, for instance on an angle of substantiallyl forty degrees, more or less.

A further purpose is the provision of a holder, preferably of skeleton form, which may be made to fit any size interior of a flue regardless as to its eXterior,Whetlier or not'it is cylindrical, square or otherwise shaped in cross section. f

jstill further'purpose is the provision of a rotarycap or l cover for a Vlue,includ inga' vane of sulicient length'to` one side of thecenter of the'fiue', thereby inducing the cap or cover to more readilyturn, So that,V it may create an upward draft around the upper end of the chimney or'flue.'

Stilll another purpose is the provision ofv a flue cap or cover, including its supporting frame of skeleton construction, which is yery simple in construction and may be manufactured at a relatively low cost, enabling it tobe sold to the trade ata reasonable*4 profits@ v' Furthermore the present device eliminatesS the use 'of threads and other fasteners.

'While thedesign and construction atfpres 'entl illustrated and set forth are deemed' preferable, it is obvious that as va resultlofV -a reduction of the invention to a more prac-f tical form for commercial purposes, the in vention may bep-susceptible of changes and theright to these changes is claimed, provided they are comprehended withinl the scope of what is claimed.

The invention comprises further features andcombination of parts, as will be hereinafter set forth, shown in the drawings and claimed.l

In the drawings Figure 1 isa View in perspective of' the improved flue cap or cover as applied to the upper end of a flue or chimney and constructed in accordance with the invention; Figure 2V is a vertical sectional view through the same; F

Figure 3 is an enlarged v detail View of the brick, metal,` heavyk sheet tin, iron or the like. v

Arranged movably in the upper end of the Hue is a rectangular frame 2. This frame is skeleton in form, comprising the bars 3, which are rectangular, one disposed skeleton frame which fits within the flue or` Figure 4 is a view in elevation looking the upper ends of one of the bars 3 are over? Kwithin the other, at right angles to each other, so toQeria-g'e the opposite ksides of the flue oi" cl'iiihney.` It Willv be noted that lapped and riveted or otherwise bolted together as shown at 4. The ends 5 of the other U-sha-ped bar overlap and one of th'eiiv is secured between the first overlapping,` ends of the other bar, and are riveted or otherwise bolted together as at 6. However, the

bar` V'which includes the latter `roverlapping'` ends', where it merges tliereinto is bent upon itself outwardly, thereby p rovidingnprojecy tions 7,'v which are designed to overlap' and engage the upperendofy the flue,l so as to limit ythe-frame 1n its insertion into' the flue.

Mountedi'n bearings of they skeleton frame., which is mounted in the= flueis` a sup;

v. porting rod 8', whichhas an eye 9 at its' upper end, and a, washer 10. This rod mounted thereon awind vane 9a which inayl be any suitable si'z'e' and constructed of any suitable material, either sheet metal, such as .l tin,v slhueet aluminiuimiron or the like. `This vane may be `any suitable length andV its upfi p'erportion is provided with an elongated flange dll'. extending laterally. Theinner portionofthe lower edge ofthe vane has a. Y lateral flange l2, through bearings of which and the other flange the rod entendis.

Y Alsov the inner end of the'vane terminates in lateralk ears 13, which are bolted or other-` wise fastened at ll'lto the ca 'p or cover fory the flue. .Thisl capf or coverl is elongated,

and is'.lv preferably semi-cylindrical in cross section,l and since the inner end of the vane has" an inclined edge,l'th'e cap orl cover is supported1 in an inclinedsposi'tion extending f downwardlyand laterally, substantially at angangle of o rfl()V degrees, l i

Furthermore it will be noted that the cap or co-ver extends downwardly and terminates a substantial distancev below the upper end of theflue, in order to start the wind in any@ lupward direction before it gets very closelto .the flue.y In other words the dispo-` sition of the c 'ap oroiver'createsv an upward draft, ca'iisinhfA a proper drawing'r through the flue, as well as causing the hre in the the vane extends a substantial distance from theshdft, andisof a substantial depth, in

order o be acted upon by the wind, for the `purpose of inducing the vane to easily turn and thereby position the top or cover in the 'direction of thel wind.

A suitable nut 8? may or may'notp be mounted upon the shaft below the *frameA or holder or supportl 'as.'th e` casemay be, in ardere@ hold the Shaft in page, it being' olorY violus'V that the iiut, may be dispensed with, provided the'l shaft is made suliiciently l-OIg as to prevent it from upward displace'- ment. Y Thetop or cover berrused in connection with chimneys, which be constructe'd of Vany suitable material, Ysuoli as"I brick,v tile, sheet iron, concrete' or the like'. A lsothetop" or cover may be used on, fac#y tory smoke stacks, or on smoke stacksofany character.

is claimed is :-f y v Y yIn a flue top, the combination withla flue, ofV a support mounted therein,p`said support The invention having been set forth, what I cornprlsinga pair of rectangular frames dis# posed one within the otherand positioned 'at right angles to each other, the upper por'- tion ofon'eV of said lvvtls laterally extendingliangesadapted to engage the upper edge of the flue, said frames being` alfrangjed to frictionally engagethe inner ,walls ofthe flue, a shaftV neXtenolingV through the endportioiis offsaid frames, a vane rotat ably mounted' on Vthe shaft' and comprising" long' and shortr arms, the short arm'having' lateral ears, a flue top of arcuate shapevin cross-section fastenedto the ears and dis; posed at an acute angle'to' the flue and'ovei lying the `upper of the flue, a. transwe'rsev brace secured to: the'vane and having its op'`V posite Aends secured"y to the opposite y'sides'of the top, `said top extending downwardly and laterally a substantial Adistance below rthe,` upper end ofthe' flue, thereby induci.ngi a l draft infanupfward direction over the up-` per endv ofthe flue.r M l l Y, v In testimony whereof I hereunto afh my signature;v

trims H; nom/rau, i 

